import java.util.*;

/**
 * Created with IntelliJ IDEA.
 * Description:
 * User: 牛孟俊
 * Date: 2023-11-15
 * Time: 20:03
 */
public class Test2 {
    public static void main(String[] args) {
        Map<String,Integer> map = new HashMap<>();
    }
    public static void main1(String[] args) {
        //效率Heap大于Tree的

        Map<String,Integer> map1 = new HashMap<>();
        Map<String,Integer> map2 = new TreeMap<>();

        Set<String> set1 = new HashSet<>();
        Set<String> set2 = new TreeSet<>();
    }
}
